Code:
alias anotice {
  if $chan(0) != 0 && $1 {
    var %i 1,%x 1
    while %x <= $chan(0) {
      while %i <= $nick($chan(%x),0) { if $nick($chan(%x),%i) !isop # && $nick($chan(%x),%i) != $me { .notice $nick($chan(%x),%i) $1- } | inc %i }
      %i = 1
      inc %x
    }
  }
}

:|

-watcher